****0000000193**** WSCA31 MHTG 301820 MHTG SIGMET A1 VALID 301820/310020 MHTG- MHCC CENTRAL AMERICAN FIR EMBD TS OBS AT 1815Z WI N0815 W08255 - N0545 W08255 - N0718 W08746 - N0822 W08711 TOP FL520 STNR INTSF=